The city of Mumbai, touted as a potential rival to the Chinese city of Shanghai, was asked to stay indoors on Tuesday because of intense rain.

“Rain is expected to remain intense even today,” city authorities tweeted. “We request you to stay indoors unless there’s an emergency.”

Financial markets were open but hampered by poor infrastructure. Many firms asked employees to work from home.

As weather officials forecast intermittent heavy showers and isolated extremely heavy rainfall, authorities called a holiday for government offices and educational institutions.

Mumbai is looking to turn itself into a global financial hub but large parts of the city struggle to cope with annual monsoon rains as widespread construction and garbage-clogged drains and waterways make it increasingly vulnerable to chaos.

As much as 375mm of rain fell over 24 hours in some areas of Mumbai, the highest in 14 years, flooding streets and railway tracks, forcing the suspension of some suburban train services which millions of commuters ride to work each day.

About 1,000 people stranded in low-lying areas of the city were rescued by naval personnel using rubber boats after a swollen river began to overflow, municipal authorities said.

As weather officials forecast intermittent heavy showers and isolated extremely heavy rainfall, authorities called a holiday for government offices and educational institutions.

“Every year, the first spell of rainfall throws normal life out of gear in Mumbai. An inquiry is needed into why this happens despite claims of preparations,” said Ajit Pawar, an Opposition leader.

Chief minister Devendra Fadnavis said the city’s infrastructure cannot handle excessive rainfall in a short period of time, but new pumping stations would be operational soon.

The main runway at Mumbai airport, India’s second biggest, was closed from midnight after a SpiceJet flight overshot the runway while landing, an airport spokesperson said.

The secondary runway is operational, but 302 were cancelled because of bad weather, she said. Another 350-odd flights, both arriving and departing, were delayed between 28-51 minutes.

“Our team is trying their best to bring the main runway back in operation and this may take up to 48 hours,” airport authorities tweeted.

Two persons in a car drowned when their vehicle got stuck in a flooded subway in Malad amid heavy downpour late on Monday. The deceased were identified as Irfan Khan, 38, and Gulshad Shaikh, 40.

Gambhir Kari Singh, a 45-year-old watchman, died when the compound wall of a housing society collapsed on him in suburban Mulund on Monday night.

A 22-year-old man in Ville Parle died after suffering an electric shock in the early hours of Tuesday outside his home. In Buldhana district, a 52-year-old woman was killed on the spot by a bolt of lightning.

As rain continued to lash the city, waterlogging was reported at Airport Colony, Vakola Junction, Postal Colony, near Chunabhatti railway station, and Vakola Road, a BMC official said.

Students who were supposed to come to Mumbai on Tuesday for document verification for admission to MBBS, BDS and BAMS courses have been told to come on July 5. Mumbai University has postponed its BSc computer science exams.

Central Railway has decided to run local trains in limited corridors because of waterlogging on the tracks.

Thousands of passengers stranded in midnight local trains have been brought to nearby stations and served tea and biscuits.

Many long-distance trains have either been cancelled or terminated, an official said.

Power utility companies have suspended electricity supply to some suburban areas of Mumbai as a precautionary measure.

In Pune, six labourers were killed and three injured when a wall collapsed in Ambegaon late on Monday night. Another wall cave-in at Kalyan in Thane district early on Tuesday killed three persons. The school wall had fallen on hutments.

Two waiters at Kashimira in Thane were electrocuted on Tuesday when rainwater gushed into their hotel. Virendra Dasu Buniya, 27, and Rajan Das, 19, could not see a live wire in the kitchen because of the accumulated water.